How do you pronounce letter Z (Zee) ?

Name and pronunciation

In most English-speaking countries, including the United Kingdom, Canada, India, Ireland, New Zealand, and Australia, the letter's name is zed/zɛd/, reflecting its derivation from the Greekzeta (this dates to Latin, which borrowed X, Y, and Z from Greek, along with their names), but in American English its name is zee/ziː/, analogous to the names for B, C, D, etc., and deriving from a late 17th-century English dialectal form.

"Z",Oxford English Dictionary,2nd edition (1989);Merriam-Webster's Third New International Dictionary of the English Language, Unabridged(1993); "zee",op. cit.